GEO 303 Chapter Notes - Chapter 5: Continental Crust, Overburden Pressure, Muscovite
10 May 2016
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Products of weathering were transported by wind, water, ice, to be deposited as sedimentary rocks. But this wasn"t the end, as any rock can be transformed any pressured into metamorphic rock. Intense metamorphism can cause a rock to melt partially, thus returning it to the igneous stage again. Cosmic matter: cosmic matter, the original condensate of the solar system, is found on earth today only in the form of meteorites that come in stony and iron- nickel varieties. Stony are composed of feldspar, olivine, other familiar materials, plus minor amounts of minerals that occur rarely or not at all in ordinary rocks. Igneous rocks: have crystallized from melted material, or magma, magma can be all three states of matter (solid, liquid, gas, liquid magma that erupts through the earth"s surface is called lava. Although igneous rock is 80% of the volume in the crust, we"ve never seen it directly being made.
